●●●●● ●●●● ●●0 ●●● White Petrolatum ●●●● is a purified mixture of semisolid hydrocarbons from petroleum that has been wholly or nearly decolorized It is used for the same purpose as petrolatum. A commercial product is White vaseline
White Petrolatum is a purified mixture of semisolid hydrocarbons from petroleum that has been wholly or nearly decolorized. It is used for the same purpose as petrolatum. A commercial product is White Vaseline
●●●●● ●●●● ●●0 Yellow ointment ●●● ●●●● is mixture(1000g) of yellow wax(50g) and petrolatum( 950g) Yellow wax is the purified wax obtained from the honeycomb of the bee The ointment is prepared by melting the yellow wax on a water bath, adding the petrolatum unti the mixture is uniform, then cooling with stirring until congealed
Yellow ointment is mixture (1000g) of yellow wax (50g) and petrolatum (950g). Yellow wax is the purified wax obtained from the honeycomb of the bee. The ointment is prepared by melting the yellow wax on a water bath, adding the petrolatum until the mixture is uniform, then cooling with stirring until congealed
●●●●● ●●●● ●●0 ●●● ●●●● White ointment This ointment differs from yellow ointment by substituting white wax and white petrolatum in the formula
White ointment This ointment differs from yellow ointment by substituting white wax and white petrolatum in the formula
●●●●● 2)Absorption bases ●●●● ●●0 ●●● ●●●● Absorption bases are of two types: Those that permit the incorporation of aqueous solutions resulting in the formation of water-in-oil emulsions (e.g hydrophilic petrolatum) Those that are water-in-oil emulsions and permit the incorporation of additional quantities of aqueous solutions(e.g, Lanolin)
2) Absorption bases Absorption bases are of two types: Those that permit the incorporation of aqueous solutions resulting in the formation of water-in-oil emulsions (e.g., hydrophilic petrolatum) Those that are water-in-oil emulsions and permit the incorporation of additional quantities of aqueous solutions (e.g., Lanolin)
●●●●● ●●●● ●●0 ●●● ●●●● Absorption bases may be used as emollients; are not easily removed from the skin with water washing since the external phase of the emulsion is oleaginous are useful as pharmaceutical adjuncts to incorporate small volumes of aqueous solutions into hydrocarbon bases
Absorption bases may be used as emollients; are not easily removed from the skin with water washing since the external phase of the emulsion is oleaginous; are useful as pharmaceutical adjuncts to incorporate small volumes of aqueous solutions into hydrocarbon bases